You can submit programs directly to the batch system with 'srun', giving all the command on the command line, though you should normally use a jobscript and submit it with 'sbatch', for larger or more complicated jobs.
More information about parameters and job submission files can be found on the Slurm submit file design page.
Running two tasks, each on a different core.
$ srun -A <account> -n 2 my_program
Run 6 tasks distributed across 2 nodes.